JPH0714418B2 - Drain device operation monitoring device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is applicable to the pleural cavity of a patient.
A device for monitoring the operation of a drain device that holds a negative pressure of
Check the operation of the drain device and make sure that the patient has fully healed and drained.
Device to determine when the device may be removed.
To do.

[0002]

2. Description of the Related Art A patient's pleural cavity is maintained at a necessary negative pressure,
It is known in the prior art to provide a draining device that serves to remove fluid from the pleural cavity and thus allow the patient's lungs to fully inflate. 1968 1
U.S. Pat. No. 3,363,626, issued March 16, discloses the first unit system to achieve the above results. The device includes a collection chamber, an underwater seal chamber that prevents atmospheric air from entering the patient's pleural cavity, and a pressure manometer chamber that maintains a proper level of suction within the patient's pleural cavity. . During normal operation of a drain device of the type disclosed in the above patent, air from the patient's pleural cavity is bubbled by the underwater seal and exits the device through the suction outlet. The underwater seal chamber allows the doctor to observe the path of the foam, but it is clear that this observation can only be done when the doctor is with the patient, so the hospital staff knows how the drain device is working and the patient's symptoms. There is a need to provide a drain device that incorporates a diagnostic system that does.

US Pat. No. 4,617,020, issued Oct. 14, 1986, discloses an air leak detector and counter for a drain system. In this device, bubbles are electronically detected when passing through the underwater sealed chamber, and an output circuit that responds to the signal is provided, and both count the number of bubbles passing through the underwater sealed chamber. Each time it passes, the timer is reset to zero, and the doctor can see the timer to check the time elapsed since the last bubble left the underwater seal chamber. The doctor knows how long the foam has passed through the foam chamber and determines when the patient may be fully healed and the drain device connected to the patient's pleural cavity may be removed. What you can do is important. For example, a doctor can pass 3 bubbles
If the bubble is determined to be sufficient to discharge the patient, if not over time, then 3
The drain device can be removed from the patient when the timer indicates that time has elapsed. However, it is desirable to provide a mechanism that ensures proper operation of the drain device when initially installed in the patient's pleural cavity. It is of utmost importance for the physician to be immediately aware of any failure of the drain system and of course to prevent apparently fatal lung collapse of the patient. The invention disclosed in the present application can achieve all of the above objects.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to ensure that the drain device is installed even when the patient is first installed when the patient is in the most severe condition.
You can confirm that it is working properly and that the patient
Decide when to heal and therefore remove drain device
It is to provide an operation monitoring device for a drain device, which can be set .

These aims are to provide a block timing mechanism in which the periods can be preset, one period being relatively short, for example a few minutes, and the other period being on the order of numbers. To be achieved. The shorter period described above is used to ensure that the drain system is operating properly during the initial recovery period of the patient.
For example, if the doctor is in the first 24 hours of operating the drain
If, on the other hand , it is decided that the foam has to pass the device at least once every 5 minutes, then the timer is set to 5 minutes and the timer is The alarm does not sound after reset . However, if the foam did not pass through the drain system within 5 minutes, an alarm was issued to the hospital staff who checked the drain system and checked whether the tube was plugged in place in the patient.
It will ascertain whether the suction line is not turn off the power supply inadvertently. The time interval set in the timer depends on the patient's symptoms.
The doctor can change accordingly . Then, at the end of the recovery period, the time interval is set to, for example, 3 hours, so that if the bubble does not pass through the drain device during that period, the drain device is healing because the patient's pleural cavity has healed. It may be decided that the may be removed.

It is an object of the present invention to provide a drain device with diagnostic means that allows a physician to determine whether the drain device is working properly and when it has healed sufficiently to allow removal of the patient's drain device. Is to provide.

Another object of the present invention is to provide electronic foam detection means provided in the drain device which is connected to a preset block timer which resets each time the bubble passes through the drain device during the preset period. That is.

[0008]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

The illustrated drain system 1 is similar to the system shown in US Pat. No. 4,605,400 issued Aug. 12, 1986. The device shown comprises a collection chamber 2 divided by a partition 3 into three separation chambers. The inlet tube leading from the patient's pleural cavity to the collection chamber is shown at 4. The suction outlet tube from the collection chamber is shown at 5, and the flow path 6 extends from the suction inlet across the upper end of the drain device and through the suction control chamber 7. The suction control chamber 7 is provided with ball valves 8 and 9, which are pressed by springs and installed on valve seats 8a and 9a at the lower end of the suction control chamber 7. There is also provided an outlet 10 to the atmosphere communicating with the ball valves 8 and 9 through openings formed in the valve seats 8a and 9a . When the intake air in the suction outlet tube 5 reaches a predetermined negative pressure level , the atmospheric pressure acting on the lower surfaces of the ball valves 8 and 9 reaches the spring pressure, and the ball valves 8 and 9 rise to the atmospheric pressure. Is introduced into the device to reduce the suction level in the drain device. A suction control mechanism of the above general type is described in US Pat. No. 4,60.
5,400 in FIG. The suction level held in the drain device is indicated by the position of the ball 12 provided in the tube 11 whose lower end is open to the atmosphere.

At the upper end of the collection chamber, an outlet 13 is provided which communicates with the trap chamber 14 below the one-way valve 15. The one-way valve allows gas to exit the collection chamber through the valve, but prevents high pressure air from passing through the valve in the opposite direction. Details of the structure of this valve are disclosed in US Pat. No. 4,605,400. A negative pressure safety valve 16 is mounted on the upper wall of the drain device, which allows a metered amount of atmospheric air to enter the collecting chamber when the chamber is over negative. The details of the construction of this negative pressure safety valve are more clearly described in FIG. 6 of US Pat. No. 4,605,400.

The air passing through the one-way valve 15 passes through the bubble detection chamber 17. Details of the structure and operation of the bubble detection chamber 17 are described in US Pat. No. 4,605,400, FIG. 10 and the same column, column 14, line 61 to column 15, line 37. A pair of diodes 18 and 19 are arranged across the flow path at the lower end of the partition wall 20. When a gas bubble passes between the diodes 18 and 19, a signal is transmitted on the transmission line 21.
Is transmitted to the control device 22. The circuitry utilized to connect and actuate the bubble detection signals emitted by diodes 18 and 19 with a timer mechanism within controller 22 is described in U.S. Pat. No. 4,617,020.

The controller 22 comprises a time interval selector 23, by means of which it is possible to set any desired time interval from 1 minute to 6 hours. Alternatively, a fixed time interval can be preset in the controller and the time interval selector 23 actuated to select the desired preset time interval.

A pair of switches 24 are provided, one of which is provided with a means to operate when the drain device is first connected to the patient to ensure proper operation of the drain device. In this operating mode, for example, 10 to 15
A relatively short time interval, such as minutes, is selected so that if the foam does not pass through the drain device within the predetermined time interval , the alarm device 25 will sound a light signal.
This alerts the hospital staff, who inspects for drain device obstruction or failure to ensure that the patient's pleural cavity is maintained at a proper negative level to function properly. . If the bubbles pass the bubble detector within the preset period, the timer automatically resets to zero.

As the patient heals, the physician sets the time intervals to longer periods, and eventually the switch system 24 switches to a tube disconnect function that signals when the foam has not passed the drain device for hours. To be If the bubbles do not pass through the system during this period, an alarm will sound or a light will indicate that the patient has healed sufficiently to allow the drain device to be removed. The timer automatically resets to zero if the foam passes through the drain device for a preset time interval.

[0015]

【The invention's effect】 In the present invention, the operation of the drain device of the first invention
Monitoring device is located in the middle of the flow path from the collection chamber to the suction source
Generates a bubble detection signal in response to bubbles passing through the bubble chamber
Since it is equipped with a bubble detector, it can be activated by operating the drain device.
Bubbles passing through the chamber can be detected. Moreover, the product
The dynamic monitoring device receives an adjustable timer and a bubble detection signal.
Or the time interval set in the timer has expired
Reset means for resetting the elapsed time of the time interval to zero
When there is no bubble detection signal within the time interval,
And a signal operating unit for displaying. Therefore, in advance
Bubbles are detected within the time interval set in the timer.
(In this case, in the initial stage of suction, the drain device
Normal operation of the air from the patient's chest cavity (if liquid is present
The liquid is also aspirating))
Restarting the clock from zero by means of
You can continue to monitor. In addition, it is preset in the timer.
No bubbles were detected within the specified time interval
(In this case, the drain device is not suitable in the initial stage of suction.
Air is not being sucked from the patient's chest cavity due to untimely actuation
Is not suitable for the drain device due to the signal operation part.
It is possible to immediately notify the hospital operator of the painful operation.
It Operation monitoring device for drain device according to the second aspect of the present invention
Further comprises a mode selection means connected to the timer
There is. Therefore, a short time in one operating mode
I set the interval and no bubbles occurred in that short time interval
In some cases, the drain device may
The effect of issuing an alarm indicating that it is not operating
Can play. Also, in different operating modes
Set a relatively long time interval, and bubbles will be generated at that long time interval.
If it does not occur (in this case, the patient is cured and the patient's chest
The negative pressure inside the cavity will be maintained)
Patient is healing enough to remove drain device
The effect of issuing a warning that
It

[Brief description of drawings]

FIG. 1 is a partial vertical cross-sectional view of a drainage device incorporating a bubble detection system of the present invention.

[Explanation of symbols]

 1 Drain device 2 Collection chamber 4 Inlet tube 5 Suction outlet tube 6 Flow path 7 Suction control chamber 8, 9 Ball valve 10 Outlet to atmosphere 11 Tube 11 12 Ball 14 Trap chamber 15 One-way valve 16 Negative pressure safety valve 17 Bubble detection chamber 18, 19 Diode 22 Control device 23 Time interval selector 25 Alarm device

Claims (2)

[Claims] 1. A collection connected to a suction source and a patient's chest cavity.
An operation monitoring device for a drain device having a chamber,
Bubbles placed in the middle of the flow path from the collection chamber to the suction source
And a chamber that is adjacent to the bubble chamber and is responsive to bubbles passing through the bubble chamber.
Bubble detection unit that emits a bubble detection signal and a predetermined time
The interval can be set, the operation of the drain device and the patient
Adjustable timer used to monitor symptoms and the foam
When a detection signal is received or during the predetermined time
The end of the interval, when the predetermined time interval has elapsed
Reset means for returning the interval to zero, the bubble detection unit and the adjustment unit.
Pre-determined time connected to both timers
When there is no bubble detection signal within the interval, a message indicating that fact is displayed.
And an operation monitoring device for the drain device . 2. A collection connected to a suction source and a patient's chest cavity.
An operation monitoring device for a drain device having a chamber,
Bubbles placed in the middle of the flow path from the collection chamber to the suction source
And a chamber that is adjacent to the bubble chamber and is responsive to bubbles passing through the bubble chamber.
Connected to the bubble detection section that emits a bubble detection signal.
And the bubbles are received in the bubble chamber in response to the bubble detection signal from the bubble detection unit.
And a signal from the timer
The alarm means that activates the alarm and the mode connected to the timer.
Mode selecting means , and the mode selecting means has one operation.
Set a short time interval in the mode and
If there is no foam in the septum, the drain device
A warning that it is not operating properly in the initial stage after
A relatively long time interval in another operating mode
If no bubbles occur during that long time interval
In addition, the patient must have healed enough to remove the drain device.
That is configured to give an alarm indicating that
The operation monitoring device for the device.